The Nielsen Company today reported December 2009 data for the Top Parent Companies/Divisions and Top Web Brands, as well as average Internet usage.

Example:  The data indicates that 63.8 million home and work Internet users visited at least one of the Apple Computer-owned sites or launched an Apple Computer-owned application during the month, and each person spent, on average, a total of 1 hour, 27 minutes and 45 seconds at one or more of their sites or applications.

The parent level is defined as a consolidation of multiple domains and URLs owned by a single company or division. The brand level is defined as a consolidation of multiple domains and URLs that has a consistent collection of branded content.